<template>
  <div>
    <el-row class="tac">
    <el-col :span="12">
        <h5>默认颜色</h5>
        <el-menu
        default-active="2"
        class="el-menu-vertical-demo"
        @open="handleOpen"
        @close="handleClose">
        <el-submenu index="1">
            <template slot="title">
            <i class="el-icon-location"></i>
            <span>导航一</span>
            </template>
            <el-menu-item-group>
            <template slot="title">分组一</template>
            <el-menu-item index="1-1">选项1</el-menu-item>
            <el-menu-item index="1-2">选项2</el-menu-item>
            </el-menu-item-group>
            <el-menu-item-group title="分组2">
            <el-menu-item index="1-3">选项3</el-menu-item>
            </el-menu-item-group>
            <el-submenu index="1-4">
            <template slot="title">选项4</template>
            <el-menu-item index="1-4-1">选项1</el-menu-item>
            </el-submenu>
        </el-submenu>
        <el-menu-item index="2">
            <i class="el-icon-menu"></i>
            <span slot="title">导航二</span>
        </el-menu-item>
        <el-menu-item index="3" disabled>
            <i class="el-icon-document"></i>
            <span slot="title">导航三</span>
        </el-menu-item>
        <el-menu-item index="4">
            <i class="el-icon-setting"></i>
            <span slot="title">导航四</span>
        </el-menu-item>
        </el-menu>
    </el-col>
    <el-col :span="12">
        <h5>自定义颜色</h5>
        <el-menu
        default-active="2"
        class="el-menu-vertical-demo"
        @open="handleOpen"
        @close="handleClose"
        background-color="#545c64"
        text-color="#fff"
        active-text-color="#ffd04b">
        <el-submenu index="1">
            <template slot="title">
            <i class="el-icon-location"></i>
            <span>导航一</span>
            </template>
            <el-menu-item-group>
            <template slot="title">分组一</template>
            <el-menu-item index="1-1">选项1</el-menu-item>
            <el-menu-item index="1-2">选项2</el-menu-item>
            </el-menu-item-group>
            <el-menu-item-group title="分组2">
            <el-menu-item index="1-3">选项3</el-menu-item>
            </el-menu-item-group>
            <el-submenu index="1-4">
            <template slot="title">选项4</template>
            <el-menu-item index="1-4-1">选项1</el-menu-item>
            </el-submenu>
        </el-submenu>
        <el-menu-item index="2">
            <i class="el-icon-menu"></i>
            <span slot="title">导航二</span>
        </el-menu-item>
        <el-menu-item index="3" disabled>
            <i class="el-icon-document"></i>
            <span slot="title">导航三</span>
        </el-menu-item>
        <el-menu-item index="4">
            <i class="el-icon-setting"></i>
            <span slot="title">导航四</span>
        </el-menu-item>
        </el-menu>
    </el-col>
    </el-row>

    <el-radio-group v-model="isCollapse" style="margin-bottom: 20px;">
    <el-radio-button :label="false">展开</el-radio-button>
    <el-radio-button :label="true">收起</el-radio-button>
    </el-radio-group>
    <el-menu default-active="1-4-1" class="el-menu-vertical-demo" @open="handleOpen" @close="handleClose" :collapse="isCollapse">
    <el-submenu index="1">
        <template slot="title">
        <i class="el-icon-location"></i>
        <span slot="title">导航一</span>
        </template>
        <el-menu-item-group>
        <span slot="title">分组一</span>
        <el-menu-item index="1-1">选项1</el-menu-item>
        <el-menu-item index="1-2">选项2</el-menu-item>
        </el-menu-item-group>
        <el-menu-item-group title="分组2">
        <el-menu-item index="1-3">选项3</el-menu-item>
        </el-menu-item-group>
        <el-submenu index="1-4">
        <span slot="title">选项4</span>
        <el-menu-item index="1-4-1">选项1</el-menu-item>
        </el-submenu>
    </el-submenu>
    <el-menu-item index="2">
        <i class="el-icon-menu"></i>
        <span slot="title">导航二</span>
    </el-menu-item>
    <el-menu-item index="3" disabled>
        <i class="el-icon-document"></i>
        <span slot="title">导航三</span>
    </el-menu-item>
    <el-menu-item index="4">
        <i class="el-icon-setting"></i>
        <span slot="title">导航四</span>
    </el-menu-item>
    </el-menu>

  </div>
</template>

<script>
export default {
    name:"NavMenu",
    data() {
      return {
        isCollapse: true
      };
    },
    methods:{
        handleOpen(key, keyPath) {
        console.log(key, keyPath);
      },
      handleClose(key, keyPath) {
        console.log(key, keyPath);
      }
    },

}
</script>

<style>
  .el-menu-vertical-demo:not(.el-menu--collapse) {
    width: 200px;
    min-height: 400px;
  }
</style>